In his short tenure in office Bill de Blasio has earned a new title, “Johnny come lately,” for his frequent tardiness at public events. Experts say if he doesn’t start setting his alarm clock it could affect his reputation.

An analysis in the December issue of the journal Pediatrics shows violence in films has more than doubled since 1950, gun violence in PG-13 films has more than tripled since 1985 and since 2009, PG-13-rated films have contained as much violence as R-rated films.